// Purpose: interface of wxFileDialog
// Author: wxWidgets team
// RCS-ID: $Id$
-// Licence: wxWindows license
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
/**
This class represents the file chooser dialog.
The path and filename are distinct elements of a full file pathname.
- If path is wxEmptyString, the current directory will be used.
- If filename is wxEmptyString, no default filename will be supplied.
+ If path is ::wxEmptyString, the current directory will be used.
+ If filename is ::wxEmptyString, no default filename will be supplied.
The wildcard determines what files are displayed in the file selector,
and file extension supplies a type extension for the required filename.
+ The typical usage for the open file dialog is:
+ @code
+ void MyFrame::OnOpen(wxCommandEvent& WXUNUSED(event))
+ {
+ if (...current content has not been saved...)
+ {
+ if (wxMessageBox(_("Current content has not been saved! Proceed?"), _("Please confirm"),
+ wxICON_QUESTION | wxYES_NO, this) == wxNO )
+ return;
+ //else: proceed asking to the user the new file to open
+ }
+
+ wxFileDialog
+ openFileDialog(this, _("Open XYZ file"), "", "",
+ "XYZ files (*.xyz)|*.xyz", wxFD_OPEN|wxFD_FILE_MUST_EXIST);
+
+ if (openFileDialog.ShowModal() == wxID_CANCEL)
+ return; // the user changed idea...
+
+ // proceed loading the file chosen by the user;
+ // this can be done with e.g. wxWidgets input streams:
+ wxFileInputStream input_stream(openFileDialog.GetPath());
+ if (!input_stream.IsOk())
+ {
+ wxLogError("Cannot open file '%s'.", openFileDialog.GetPath());
+ return;
+ }
+
+ ...
+ }
+ @endcode
+
+ The typical usage for the save file dialog is instead somewhat simpler:
+ @code
+ void MyFrame::OnSaveAs(wxCommandEvent& WXUNUSED(event))
+ {
+ wxFileDialog
+ saveFileDialog(this, _("Save XYZ file"), "", "",
+ "XYZ files (*.xyz)|*.xyz", wxFD_SAVE|wxFD_OVERWRITE_PROMPT);
+
+ if (saveFileDialog.ShowModal() == wxID_CANCEL)
+ return; // the user changed idea...
+
+ // save the current contents in the file;
+ // this can be done with e.g. wxWidgets output streams:
+ wxFileOutputStream output_stream(saveFileDialog.GetPath());
+ if (!output_stream.IsOk())
+ {
+ wxLogError("Cannot save current contents in file '%s'.", saveFileDialog.GetPath());
+ return;
+ }
+
+ ...
+ }
+ @endcode
+
@remarks
All implementations of the wxFileDialog provide a wildcard filter. Typing a filename
containing wildcards (*, ?) in the filename text item, and clicking on Ok, will
"BMP and GIF files (*.bmp;*.gif)|*.bmp;*.gif|PNG files (*.png)|*.png"
@endcode
It must be noted that wildcard support in the native Motif file dialog is quite
- limited: only one alternative is supported, and it is displayed without the
+ limited: only one file type is supported, and it is displayed without the
descriptive test; "BMP files (*.bmp)|*.bmp" is displayed as "*.bmp", and both
"BMP files (*.bmp)|*.bmp|GIF files (*.gif)|*.gif" and "Image files|*.bmp;*.gif"
are errors.
@beginStyleTable
@style{wxFD_DEFAULT_STYLE}
- Equivalent to wxFD_OPEN.
+ Equivalent to @c wxFD_OPEN.
@style{wxFD_OPEN}
This is an open dialog; usually this means that the default
- button's label of the dialog is "Open". Cannot be combined with wxFD_SAVE.
+ button's label of the dialog is "Open". Cannot be combined with @c wxFD_SAVE.
@style{wxFD_SAVE}
This is a save dialog; usually this means that the default button's
- label of the dialog is "Save". Cannot be combined with wxFD_OPEN.
+ label of the dialog is "Save". Cannot be combined with @c wxFD_OPEN.
@style{wxFD_OVERWRITE_PROMPT}
For save dialog only: prompt for a confirmation if a file will be
overwritten.
@style{wxFD_FILE_MUST_EXIST}
- For open dialog only: the user may only select files that actually exist.
+ For open dialog only: the user may only select files that actually
+ exist. Notice that under OS X the file dialog with @c wxFD_OPEN
+ style always behaves as if this style was specified, because it is
+ impossible to choose a file that doesn't exist from a standard OS X
+ file dialog.
@style{wxFD_MULTIPLE}
For open dialog only: allows selecting multiple files.
@style{wxFD_CHANGE_DIR}
- Change the current working directory to the directory where the
- file(s) chosen by the user are.
+ Change the current working directory (when the dialog is dismissed)
+ to the directory where the file(s) chosen by the user are.
@style{wxFD_PREVIEW}
Show the preview of the selected files (currently only supported by
wxGTK).
Note that the native Motif dialog has some limitations with respect to
wildcards; see the Remarks section above.
@param style
- A dialog style. See wxFD_* styles for more info.
+ A dialog style. See @c wxFD_* styles for more info.
@param pos
Dialog position. Not implemented.
@param size
virtual void SetWildcard(const wxString& wildCard);
/**
- Shows the dialog, returning wxID_OK if the user pressed OK, and wxID_CANCEL
+ Shows the dialog, returning @c wxID_OK if the user pressed OK, and @c wxID_CANCEL
otherwise.
*/
virtual int ShowModal();
projects / wxWidgets.git / blobdiff